ASTROSAT CZTI

Data Quality Report

Orbit 40151

Creation date: 2024-06-27T22:12:58.224446
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A12_068T02_9000005524_40151cztM0_level2.fits modeM0/AS1A12_068T02_9000005524_40151cztM0_level2_quad_clean.evt
Size (bytes)630,233,28074,488,320
Size601.0 MB 71.0 MB
Events in quadrant A2,969,245611,224
Events in quadrant B2,900,209615,041
Events in quadrant C13,130,124114,695
Events in quadrant D3,895,561523,827

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124623
B0125302
C0427992
D0157752

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5580290.519713%
B55801392.491039%
C5580462182.813620%
D55803356.003584%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7162 5581 9 9 0.13% 0.16%
B 7161 5580 99 99 1.38% 1.77%
C 7161 5579 4676 4676 65.30% 83.81%
D 7162 5581 294 294 4.10% 5.27%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 489768 3917.77 614 602 124.9
A 13 248 72508 575.9 614 602 124.9
A 9 143 9029 67.49 614 602 124.9
B 5 172 277856 2339.47 609 593 118.5
B 4 171 169881 1428.41 609 593 118.5
B 0 190 34336 284.71 609 593 118.5
C 9 187 11713410 156166.95 316 318 75.0
C 15 214 126824 1686.66 316 318 75.0
C 0 10 19363 253.92 316 318 75.0
D 12 227 648984 4494.23 586 572 144.3
D 1 52 431908 2989.65 586 572 144.3
D 13 249 308508 2134.35 586 572 144.3

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter